LONDON , England -LRB- CNN -RRB- -- Up to 1,000 human rights campaigners demonstrated Saturday in front of No. 10 Downing Street , the official residence of British Prime Minister Gordon Brown , calling on the British government to demand that full democracy be restored in Pakistan .

Jemima Khan , center , ex-wife for former Pakistani cricket star Imran Khan , joins protesters in London .

Protesters waved placards and chanted in support of the resignation of Pakistani President Pervez Musharraf , a week after he imposed a state of emergency in the country .

The crowd of demonstrators massed behind barriers and included Jemima Khan , the ex-wife of former Pakistani cricket star turned politician Imran Khan .

The demonstrators carried placards saying `` Free the innocent '' and `` End Musharraf 's Regime '' and waved Pakistani flags .

Imran Khan , who heads the the Movement for Justice Party , has been under house arrest since the emergency declaration .

His ex-wife delivered a petition to a doorman at Downing Street , calling on Britain to use its influence to ensure that all institutions are in place well in advance of Pakistani elections originally scheduled for early next year . The petition also demands that Pakistan restore democracy and the judiciary and calls on Musharraf to release all political prisoners , including lawyers , journalists and opposition politicians . E-mail to a friend

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Human rights campaigners demonstrate in front of No. 10 Downing Street

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Protests urged UK government to demand full democracy restored in Pakistan

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Cricketer turned politician Imran Khan 's ex wife Jemima among protesters